San Diego County, San Diego Rat Control Situation:
Hi David, Is a UV blacklight still useful, exterior-wise, if it rains after the rodents leave their urine stains? I am in the process of performing exterior maintenance to better exclude my roof rats. 1) I have a 25 year old cedar shake roof in San Diego California with openings under each shake along the rake edge of the roof at the gable ends of my house. There's no drip edge, i.e. under the shakes I have roofing paper (now somewhat curled) that runs more or less up to and rests right atop the fascia board. Because I have skip sheathing, and since the cross section of a shake is a wedge that is up to one inch at the upper, thick end, this appears to create many huge entry points along the rake edges even though the sheathing is rabbeted into the fascia board. As a result, I'm thinking of getting a UV blacklight to use outside the house to sleuth for urine stains along the upper edge of the gable end shakes and fascia boards. My question is, how easily does the winter rain wash away the urine, rendering this a pointless exercise? 2) I noticed a new product called "rat-out gel" and was thinking of applying it along the rake edges mentioned above. Or, maybe I should just buy many rolls of X-Clude and use that instead. Or maybe both. Any comment? Thanks very much for your website, Doug
My response: First off, I do not have experience using UV lights to detect rat urine. But I do suspect that rain will severely limit the effectiveness of this approach. I have never heard of Rat-Out Gel or XClude, but I typically stick to physical barriers rather than repellent type devices. If your roof makes this impossible, you might have a tough time keeping the rats out.
San Diego Rat Control Tip of The Week
Do Rats Enjoy Cold Locations?
For human beings, winter means dealing with a drop in temperature, but for animals like rodents, it might mean a whole change in their metabolisms and lifestyle. Rodents prefer warm places with easy access to food. Weather change for them might be deadly, so the best way for them to survive cold locations is to find an ideal refuge.
Burrows In Your House
During summer we can find burrows anywhere in the woods or other outdoor land, but with the arrival of rain, many of these shelters are torn apart. Rodents must leave in the pursuit of a new home with food, a warm environment, and away from the wetness of the outdoors.
Rats are innate explorers and are able to enter any living area because they have a very flexible bone structure able to pass through a crack. They also have claws to climb any surface. Their appearance in homes is more common with the start of cold, snow, rain, or even cloudy days.
Just One Rat Can Cause Immense Damage
Rodents love to gnaw. It is known that their teeth never stop growing and if they stop chewing, they can die. On the other hand, it is also known that due to their capacity of chewing hard things it can open up an opportunity to get their treasure: food. Food is enough motivation to keep biting anything.
When there are rats and mice appearing all over homes, there is plenty of damage that might be hard to fix. Economic losses can be alarming and because of this, it is necessary to take preventive measures such as eliminating areas that facilitate a shelter for rodents in your home during cold and humid seasons.
If you do not only want to prevent but also exterminate, you have a great advantage during winter since rodents' reproductive capacities slow down by not having adequate conditions for pups to survive. So, if you exterminate a population, chances of regeneration are minimum.
